Carpet-sweeper



S. F. PRATT. CARPET SWBEPER.

Patented Jan. 18, 1859.

I In .1

tlhtiTlilil) *iriTr'iItiilhi PATENT Oliitltjhl.

CARPET-SWEEPER.

Specification of Letters Patent No.

To all iii/'1 (no "it nan; concern:

ie it lillUWll that .i, Hannah i .PILXT'I. oi Roxhury, in the county ol? Norfolk and State of )hissachusetts, have invented an Improved (far ict tfiweeper; and i do hereby declare that the same is lull} described and represcnttnl in the following specification and the accompanying drawings, of which Figure l, is a top view of the same; Fig. .4, a transverse and central section of it, Fig. a transverse section taken through its driving wheels; Fig. l, a longitudinal section; l ig. 5, is longitudinal section of the case showing it with the brush removed so as to exhibit one of the serrated rlearers; Fig. (l, is an underside view of the carpet sweeper.

he nature of my invention consists, First. in combining with the ease and the brush of the carpet sweeper. a serrated clearer or its equivalent so applied and arranged as to cleanse the brush during its revolution. Second. in an arrangement of serrated clearers on opposite sides of the brush in order that it may he cleansed. while being revolved in either direction. Third. In an arrangement of the serrated clearer in the carpet sweeper, in such manner that the said clearer or clearing device shall form part of or be sustained by the dust receptacle. Fourth. In the arrangement of two elastic tired driving Wheels 011 opposite sides of the driving wheel of the brush shaft and so applying the said shaft in the case and to the fork of the handle as to produce effects as hereinafter stated.

1n the drawin 's above mentioned A, rcprcsents the case of the carpet sweeper and as furnished With a rotary brush 13, whose journals 0., Z), extend through the two ends or end pieces 0, d, of the case. The said brush extends a short distance out of a rectangular opening C, at the bottom of the case and has a grooved driving wheel D, fixed on its shaft or one of its journals. Furthermtne, there extends from either one or both sides of the opening C, and within the case and into the brush a serrated or toothed clearer E, the same being supported by the case or so arranged as to form a part of the dust receptacle F, disposed Within the case as shown in the drawings. hen there is a tooth or serrated clearer on each side of the brush, the said brush while being revolved $22,671. dated January 18. 18535).

in either direction, will he cleansed o'l hail, threads, lint or other extraneous matters which may gather in it, such being removed by the clearer and deposited in the dust receptacle. The action ot the clearer is such that its teeth penetrate between the bristles of the brush and seize the filaments collected thereby.

.qgainst opposite sides of the periphery of the grooved driving wheel 1), I. employ two elastic tired driving wheels ti, ll. arranged in the case as shown in the drawin 's and nirticularly in Fig. 6. thereof. Earn of the driving wheels (2, i is formed or constructed of a grooved body or pulley, o. and an elastic ring or tire, /1, made to encompass the grooved periphery oi the said body, g. The external surface of each elastic tire extends into the grooved periphery of the wheel l) fixed on one of the journals or the shaft of the rotary brush. vFurthermore, the opening or passage, 6, in which such journal is placed is made somewhat larger in diameter than the journal in order to allow the driving wheel I), to be, forced into close contact with either one or both of the wheels, G, H, and this when the machine is in operation or the wheel, I), is pressed downward by force acting on the handle of the machine which may be supposed to extend from a fork, I, in the extremities of whose prongs, Zr, 7;, the brush journals are caused to enter and are supported so as to be capable of turning freely.

From the above it will be seen that when the machine is in operation the brush will not only he cleansed of hair or other extraneous matters, whether the machine he moved in one direction or the other, but will be rotated by the combined action of the two elastic tired driving wheels G, H, and therefore will not be liable to stop rotating while the case is in movement on a carpet.

The peculiar application of the opening or passage, 2', with reference to the journal contained in it, that is, its being made. larger than said journal insures close contact of the three driving wheels under pressure of the handle when the sweeper is moved in either direction. 1*urthcrn'1orc, the employment of elastic tires of the driving wheels operates to prevent wear of the carpet. Besides this, the elastic tires (made of vulcanized india rubber or gutta percha) operating in connection with the grooved peripher y 01' the driving; wheel el the brush, are :HiViHJ HQ L'HHH in predneing l'rieliinn nervelsnry in ils rnlinlinn. I

l i-luinr l. in eenihiinilien with lhe ease A, end the rotary brush, l, of :1 carpet sweeper, Herl'nlul or Leelhed elezirer l applied we :15 in cleanse the ln'nnh during and lly its; rem) lnlinns.

J. l :llHU Ultlllll the Ell'l'ililll flllfiflll el' sew rah-d er leelhed elearers en eppesile sides ml. the brush in order that it may he cleansed while being related in either direetien.

3. I also claim the arrangement (if 'lhe serrated clearer in the ease of the carpet sweeper in such manner that the said el'iarer shall form part of or he nnlintuinerl. hy the dnrll receptacle.

=1. 1 do not claim the application of a single eluslie tired driving wheel to the driving; wheel nllixed 0n the lirnsh shall, hill elnini lhe sirrznigenienl of [we (dlhe QlilSllC tired wheels on opposite sides elf lhe driving wheel of the hrnsh she'll" us deserihed and H0 zi iplying the said shell in the ease and to the fork of the handle es in enable the brush wheel ['0 he forced in close contact with its drivers nei only when the machine is moved in either direelion but by the form exerted lhrnngrh (he handle and in so move (he inuehineihe srnne insuring the relery motion ml the brush whenever the muehine may be in lhe art of being nmved 0n and over ai carpet S. F. Pliik' f. "rij nesr'sesi .15. Il. EDDY, l3. 1". HALE, Jr. 

